Fixed: width calculation of the buttons container
Fixed: width calculation of the buttons container

The width calculation of the buttons containers does not calculate the padding and the margin. Using `$.outerWidth` we are always sure that I will be correctly calculated
boboldehampsink/SuperTable,GianlucaGuarini/SuperTable,boboldehampsink/SuperTable,GianlucaGuarini/SuperTable,engram-design/SuperTable,boboldehampsink/SuperTable,engram-design/SuperTable,GianlucaGuarini/SuperTable,engram-design/SuperTable